O'Neill's Advantages

Hear Us

Saturday 7am-8am on WOOD Radio 1300AM and 106.9FM

Find Us:

6749 Old 28th Street S.E. Grand Rapids, MI 49546

Call Us:

(616) 949-1230

Email Us:

O'Neill's Hours

Monday - Friday

8am to 5:30pm

Sat - Sun Closed

Sure Critic Certified
O'Neils Transmission Service, Inc. 

Raving Reviews from our Customers.


Our training and tools set us apart as an industry leader.

Hunter HawkEye Wheel Aligner

Back straight again

The wheel alignment business goes well with transmission repair.  Many front wheel drive vehicles require the removal of the whole from frame.  That’s why O’Neills invested in the most accurate and up to date alignment technology available today.

At O’Neills these vehicles get checked for proper alignment after major transmission repairs.

If the steering wheel if off center, or the vehicle pulls one way or the other let us check it out for you.  Our technicians love to see things come to perfection, and our alignment system gives us that kind of accuracy.

With the correct alignment, proper handling is restore along with your driving pleasure.

Hunter RoadForce Balancer


Vibrations can wreck your car, and make driving a chore.  O’Neills has the experience to identify and correct vibrations sources.

Many vibrations start in the wheel assembly.  Wheel imbalance is only part of the problem though.  Some times the wheel simply isn’t round enough to run smooth.

Our wheel balance system doesn’t just check for balance.  We apply a “Road Force” to the wheel/tire assembly and can plot up to three high spots on a tire.

We can than decide the optimum  placement on the vehicle to give you the smooth ride your vehicle was intended to have.

In addition to smoothing things out with our balancer, we can identify tire induced pulls as well.  Many times if you are experiencing a pull the culprit is a tire.  The Hunter Road Force Balancer gives us a force in pounds the direction a tire is pulling, or pushing.

O’Neills high tech equipment, and fussy techs come together to give you dependable transportation.

Pico Oscilloscope

This oscilloscope has four channels.  Combined with inductive clamps we can diagnose complex mechanical hydraulic and electrical problems.


Hot Flush

This tool cleans the debris from your transmission cooler.  When a transmission fails, contaminants from the failure are harbored in the cooler.  The Hot Flusher uses hot transmission fluid combined with an air pulsed reversal of the fluid to dislodge these particles from your cooler.  The returning oil is strained through a 27 micron screen.  We run this flusher until no contamination is visible on this screen.

Proper cooler flushing eliminates the possibility of your original transmission failure wrecking your new transmission.




Why is my Check Engine light on?

Scanners are the tools we use to comunicate with your vehicles computers.  There are generic scanners that can retrieve codes on almost any vehicle.  We do have a generic scanner, but we also use manufacturer specific scanners.  These "factory" scanners allow us to give our customers information often only available at a dealership.  This makes us truly your dealership alternative.


O'Neill's Transmission has a thorough diagnostic and service procedure for ensuring that your car, truck or transmission gets fixed correctly and on time.

What to expect

We are fully aware of the fact that our typical customer is having a bad day.  Transportation, money, and trust issues all come to a head. You need to choose someone to guide you.

When you arrive at our shop you will find clean and friendly service.  Most people comment on how clean our shop is even when we think it’s dirty.

Meet, and ride with a tech.  We believe it is important to experience the problem with the customer when ever possible.  A tech will interview you to get an idea of what to look for.  We then go for a ride together.  When a customer can point out the problem to a tech, it removes one of the biggest problems with getting your car fixed right the first time.

Since most people don’t deal with broken cars very often, we have developed an interview process that helps our customers relate their car concerns to us most effectively.

There is no need for our customers to know automotive tech talk.  We know it is stressful enough getting car problems resolved.

When having problems with your car there are some things that are helpful to notice.

  1. Are there any warning lights on?
  2. At what speed does the symptom occur?
  3. At what RPM does the symptom occur?
  4. What makes the problem stop?
  5. Can the problem be made to reoccur at will?
  6. Have you noticed any fluids leaking?
  7. Have you noticed any odd smells?
  8. How often does it happen?
  9. Are there any consistencies associated with the problem?

Our Proven Record of Commitment to the Automotive Industry

In 1960 Pat O'Neill left the familiar life of a dealership mechanic to start his own business.  The business grew quickly and Pat expanded the facility in 1964.  Through the early 70's O'Neills was a complete automotive service center.  Pat's reputation as a transmission authority combined with the high volume of transmission repair needed caused Pat to market his business as a specialty transmission shop.

By the 80's Pat's influence had expanded far beyond his business.  He was known as a great mechanic, as well as a good business man and community leader.  This reputation has called him to be an arbitrator, professional witness, and multiple terms as association Presidents.  Pat also served on an advisory committee to the Bureau of Automotive Regulations for the State of Michigan.  This committee help to develop test that would be used to certify mechanics working in Michigan.  Pat also addressed the Michigan State Legislators on behalf of repair shops in Michigan in 1978.

Pat incorporated his business in 1988, and made his son Tedd a partner.  Tedd continued to learn all facets of running the business from Pat.

The 90's saw the third generation begin to make contributions to the business.  Shaun in 1999 followed by Craig in 2002.

Although Pat is retired from the daily life of fixing cars, he is still very active in the automotive community.  Pat was heard on Wood 1300's Auto Talk on Saturday mornings until his grandson Shaun O'Neill took over for him.  He is also writing a book about the life of an auto mechanic dating back to the 1930's.

Having such a long history has the effect of long standing trust.  As with any long standing trust, no one would ever want to do anything that would betray that trust within the community.

This is your assurance we will continue to strive for excelence.